Cov yam ntxwv ua haujlwm ntawm qhov zoo hloov pauv flowmeter

(1) Kev ntsuas qhov tseeb;

(2) Kev teeb tsa cov kav dej tsis muaj qhov cuam tshuam rau qhov ntsuas qhov tseeb;

(3) tuaj yeem siv rau kev ntsuas cov kua viscosity siab;

(4) dav dav;

(5) Kev nyeem ntawv ncaj qha yam tsis muaj lub zog sab nraud tuaj yeem ncaj qha sau, tag nrho, meej, yooj yim rau kev khiav lag luam;

(6) Cov qauv tsis yooj yim, ntim loj;

(7) tsis haum rau qhov kub thiab txias;

(8) Feem ntau cov meters tsuas yog haum rau cov kua dej huv ib zaug xwb;

(9) Lub suab nrov thiab kev co.